Cold sulfur springs—neglected niche for autotrophic sulfur-oxidizing bacteria

L Nosalova, M Piknova, M Kolesarova, P Pristas - Microorganisms, 2023 - mdpi.com
Since the beginning of unicellular life, dissimilation reactions of autotrophic sulfur bacteria
have been a crucial part of the biogeochemical sulfur cycle on Earth. A wide range of sulfur …

Sulfur-cycling chemolithoautotrophic microbial community dominates a cold, anoxic, hypersaline Arctic spring

E Magnuson, I Altshuler, NJ Freyria, RJ Leveille… - Microbiome, 2023 - Springer
Abstract Background Gypsum Hill Spring, located in Nunavut in the Canadian High Arctic, is
a rare example of a cold saline spring arising through thick permafrost. It perennially …

MinION sequencing from sea ice cryoconites leads to de novo genome reconstruction from metagenomes

C Maggiori, I Raymond-Bouchard, L Brennan… - Scientific reports, 2021 - nature.com
Genome reconstruction from metagenomes enables detailed study of individual community
members, their metabolisms, and their survival strategies. Obtaining high quality …

Microbial metabolic redundancy is a key mechanism in a sulfur-rich glacial ecosystem

CB Trivedi, BW Stamps, GE Lau, SE Grasby… - Msystems, 2020 - Am Soc Microbiol
Biological sulfur cycling in polar, low-temperature ecosystems is an understudied
phenomenon in part due to difficulty of access and the dynamic nature of glacial …

Performance evaluation of a new custom, multi-component DNA isolation method optimized for use in shotgun metagenomic sequencing-based aerosol microbiome …

KO Bøifot, J Gohli, LV Moen, M Dybwad - Environmental Microbiome, 2020 - Springer
Background Aerosol microbiome research advances our understanding of bioaerosols,
including how airborne microorganisms affect our health and surrounding environment …

Metagenomic analyses of a microbial assemblage in a subglacial lake beneath the Vatnajökull ice cap, Iceland

P Vannier, GK Farrant, A Klonowski, E Gaidos… - Frontiers in …, 2023 - frontiersin.org
Skaftárkatlar are two subglacial lakes located beneath the Vatnajökull ice cap in Iceland
associated with geothermal and volcanic activity. Previous studies of these lakes with …

Modeling saline-fluid flow through subglacial channels

A Jenson, M Skidmore, L Beem, M Truffer… - The …, 2024 - tc.copernicus.org
Subglacial hydrological systems impact ice dynamics, biological environments, and
sediment transport. Previous numerical models of channelized subglacial flow have focused …

Patterns in benthic microbial community structure across environmental gradients in the beaufort sea shelf and slope

AM Walker, MB Leigh, SL Mincks - Frontiers in Microbiology, 2021 - frontiersin.org
The paradigm of tight pelagic-benthic coupling in the Arctic suggests that current and future
fluctuations in sea ice, primary production, and riverine input resulting from global climate …

DNA/RNA preservation in glacial snow and ice samples

CB Trivedi, C Keuschnig, C Larose, DV Rissi… - Frontiers in …, 2022 - frontiersin.org
The preservation of nucleic acids for high-throughput sequencing is an ongoing challenge
for field scientists. In particular, samples that are low biomass, or that have to be collected …

Sulfur-and iron-rich mineralogical features preserved in permafrost in the Canadian high Arctic: Analogs for the astrobiological exploration of Mars

GE Lau, CB Trivedi, SE Grasby, JR Spear… - Frontiers in Astronomy …, 2022 - frontiersin.org
Elliptical sulfate-rich features, stained red by the presence of iron oxides, are set within
permafrost and carbonate rock at Borup Fiord Pass in the Canadian High Arctic. These …